It seems that "rotate anti-clockwise" do the same thing as "rotate clockwise"
( I checked my controls rotate & reverse rotate are not the same ^^)

what entity are you rotating?

I think it was an arithmetic combinator or equivalent

I tried with many different entities and they rotate left and right just fine for me. Can you double-check your keyboard shortcuts?

Ok I tried again
I have Numpad 0 & Shift + Numpad 0 as shortcuts.
The last one doesn't work as expected but, it works with another shortcut (like Numpad 1)

... But I just realised that I just can't set a shortcut to Shift + Numpad X unless my numpad is unlocked. I don't know why and how I could do this before.
Sorry for that, it doesn't seem to be specifically related to this mod